Shock-absorber for vehicles.



10.884,9-67.. i' v PATENTBD APR.14,19oa.

" W.- o. WILLIAMSON.

SHOCK ABSORBBR POR VBHGLES.

APPLICATION FILED MAY 10. 1907.

UNITED STATES- WILLIAM CHARLES WILLIAMSON, OF NEW YORK, N. Y.

SHOCKAlBSORBER FOR VEHICLES.

Specification of Letters Patent.

Patented April 14, 1908A. l

Application filed May 10, 1907. Serial No. 372,890.

To all whom it may concern: l

Be it known that I, WILLIAM CHARLES 4l/VILIAIIAMSON, a citizen of the United States,

and a resident of the city of New York, borough of Manhattan, in the county and State The object of the invention `is to produce1 a device ofthis class which is simple incon-l struction and which can be veryaccurately adjusted so as to ve any resistance crabsorption of shock desired.

The invention consists' in and combination'of parts-to be -more fully described hereinafter and particularly set forth in the claims. g I

Reference is to belhad to .the accompany- .e ing drawings forming a part of this specification, 1n which similar charactersof reference indicate corresponding parts inall 'the' iigures. l

Figure 1 is a side elevation ofthe forward portion of an automobile frame showing the manner in which the device is applied in practice; Fig. 2 is an inside or rear elevation of the body of the device, with the inner plate removed; F' 3 is a cross section taken on theline 3-3 o Fig. 2; 4 is an elevation of the rocker removed from' ,the other parts of .the mechanism; Fig. 5 is an elevation showing the inner face of l.the removable back lateof the device; and Fig. 6 is a view s owing the details ofconstructionlof an adjusting stud.

Referring more particularly to the parts,

1 represents lthe forward .portion of the frame of an' automobile or similar vehicle. The rear end of this 'ame extendsdownwardly, as shown, to provide means for attaching a spring 2.v The rear end of this spring is attached to a oose neck bracket 3 .y 'fixed o nFthe underside j the franieasshdwn.

- pivot. y attached, and -thigmhcanheotsf rtally with .6

My'invcntiori .is app 'j d in the. .usual lmanner .by providing 'a e p Li-attached-to the.

2.l To

.middle portinof the lbowfsp" l the up ,r Partien of this GliPf a.'

the construction from the shock absorber 7., as indicated. The shock absorber is attached to the side. of the frame. j v

It should beunderstood that with the up- PATENT ornron.

and-down movementof the frame, the shock absorber offers a `resistance to the movements of' the arm 6, and in this Way the shock due to the sudden movement of the automobilebody, is absorbed.

The construction of the shock absorber will now be described; it comprises a body or case`8, of substantially cylindricalform, `which is provided with laterally pro'e'cting form, fitting the interior of the body, as will be readily understood. The face ofthe barrel sets against the rubbing strips. This barrel consists simplyof a rim having a disk 14 formed at the small end thereof. On the inner side of this disk, 'iosts 15 or square studs are rigidly attache and these project into the interior of the barrel. f

y On theinterior of the barrel 13 I rovide a rocker 16, which has' a body of isk form having enlar ed. notches 17 formed in the edges thereo These notches'are' adapted to receive the posts 15 which are\p laced dametrically op o site to each-other, as shown in Fig. 2. 'lhe rocker is further with a round neck 18 which extends thfough and through the `case so as -to present-a ears-9 facilitatin its attachment to t e side.I

ceived a barrel 13 which is offslightly conical i face of this ring as indicated clearly at the provided openings formed in the disk'1'4 of the barrel,

square projecting head 19 on the outer side of the case.` This rocker is longitudinal bore 2() which 1s lprovided with screw threads 21 so as to receive an adjusting this .head a plurality'of circlnnferentiallvdis. posed recesses 24 are formed. In the neck ..1

18 of the 'rocker a small pin 25 is set in a suitable opening, and behind this pin a helical 'spring 26 is laced which tends to force the` .pm outwar y sothatits upper end is heldin provided with a.

stud 22 which passes into the interior of the 40 soon as this occurs, a further movement of lwill appear more fully hereinafter.

engagement with the under side of the head 23, and in one of the recesses 24, as shown 1n Fig. 3.

' The inner end of' the adjusting stud is out awayso asto form a seat 27 for a ball28, and

Y this ball projects; above theV head 23, as shown. j A

The barrel 13 is adapted to be setinto the case from the rear through anenlar ed opening which is closed by a plate 29 aving a threaded edge 30 which enables it to be screwed in position. This plate is provided with recesses 31, enabling a Spanner wrenchl to be used in placing it in position. On its inner face, the plate 29 is cut away so as to form an annular shoulder or sea't32 for a spring4 plate 33, and the'central part of the `face is removed so as to form a recess 34 so that'when the plate is ap lied in position, the middle portion thereo' is unsupported. When the plate is secured in position, the inner face of the spring plate 33 comes against the ball 28 as shownin'Fig. 3.

The outer end of the adjusting stud 22 projects from the rocker and is formed with a reduced square head 35, the purpose of vIvIhich on the square head 19 of the rocker, the roc er arm 6 is attached, as indicated in Fig. 1, so that asA the frame moves u or down, the link 5 will rock the arm 6A an the rocker 16.

The mechanism within the shock absorber runs in a bath of oil.v

The mode of operation, and the manner of vadjusting the shock absorber, will now be de scribed: As the rocker 16 moves in one direction or the other on its central axis, there is little or no resistance offered to its movement until the edges of the notches 17 4come in contact with the sides of the posts 15'. As

theAA rocker` will also move the barrel 13.

Considerable frictional resistance is oll'ered` to the rotation of the barrel, as will be readily understood, and this resistance absorbs the shock. It will be observed that the pressure between the barrel and the case is producedb 4the spring plate 33 pressing upon -the ba l 28.

If it is desired to adjust the partsso as to increase the ressure wherebyr the shock absorber will a sorb -a greater shock, this adjustment can be effected b applying a small wrench to the square hea 35 of the adjusting stud. j 'By screwing the stud in the proper dlrectlon, it4 can be advanced inwardly in the rocker, so as` to press the ball 28 more firmly -against the inner face of the spring plate 33.

In adjusting up the`stud in this manner, the amount of adjustment will be indicated by the pin 2 5 as it passes the recesses- 24; thus the stud can be adjusted if desired, tothe next recess or to the next beyond, and so on. The pin 25 also operates to hold the stud against accidental displacement from any position4 into which it has been adusted.

Attention is called to the 'fact that the movements of the rocker do not have any material tendency to unscrew the back plate 29 of the device, for the reason that the only .engagement made with the back plate is at the ball 28, which touches it at the center and practically in a single point; thus, there is no frictional turning movement exerted u on the plate so that it will stay in position w ien once screwed up. `Tl1is insures that the adjustment will always remain as desired.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a shock-absorber, in combination, a case, a spring barrel, a spring plate, the ed es whereof are supported in said case, an a member held against the body of said plate and transmitting the pressure thereof to said barrel.

2. In a shock absorber, in combination, a case, a friction barrel, means for exerting pressure on said barrel at a point on the axis thereof, and a rocker for moving said barrel.

3. In a shock absorber, in combination, a case, a friction barrel therein, a rocker adapted to move said barrel, a rotatable adjusting device on the axis of said barrel, and means for exerting pressure on said barrel at a point on the axis thereof.

4. In a shock absorber, in combination, a case, a friction barrel therein, an adjusting stud mounted coaxially with said barrel, means for exerting pressure on said barrel at a point on the axis thereof, and al rocker for moving said barrel.

5. In a shock absorber, in combination, a case, a bar-rel therein, an adjusting device rotatably mounted coaxially within said barrel and including a stud, means for permitting a step-by-step adjustment ofsaid stud, and means for exerting pressure on said barrel at a point on the axis of said barrel.

6. In a shock absorber, in combination, a case, a barrel mounted therein, a spring plate attached in said case, an adjustni(r device rotatable coaxially with said barre, and a member between said adjusting device and .said plate and touchingthe same on the axis coaxially in said barrel, an adjusting, stud ball between said spring plate and said stud,

' said s tud having a in said rocker, and a ball I mounted coaxiall d spring plate and said adheld between sai justinIg-stud. j

- 9. 'n a shock absorber, in combination, a case, a barrel therein, a rocker mounted coaxially in said barrel, an adjusting stud mounted coaxially in said rocker and projecting therefrom, a spring plate in said case, a

and a spring-pressed pm set in said rocker,

head with recesses engaged by said pin to hold said stud against rotation.

10. In a shock,l absorber, in combination, a case, a friction barrel a back plate, a spring plate' seating on said' back plate and pressing In testimony whereof I have signed my 25 name to this speciiication in the presence of two* subscribing Witnesses. i

WILLIABZI CHARLES WILLIAMSON.

Witnesses:

II. A. RUTHERFORD,

A. W. MEAD. 

